Nipple.



A. G. GARDINER.

NIPPLE.

AzPLlCATlON FILED JULY 1. 1915.

Patented-Mar. 21, 1916.

Z;2 venior' vented certain new page of the nipple passage,

. use upon ABRAHAM GARDINEB, OF PROVIDENCE, RHODE ISLAND.

NIPPLE. I

Specification of Letters Patent.

Patented Mar.'21, 1916.

Application filed July 1, 1915. Serial No. 37,407.

To all whom it may concern:

Be it known that I, ABRAHAM G. GAR- DINER, a citizen of the United States, residing at Providence, in the county of Providence and btate of Rhode Island, have inand useful Improvements in Nipples, of which the following is a speci- .fication.

My invention relates to nipples intended for use upon nursing bottles, and has for its essential objects, the prevention of the stopby accumulation of air at the base thereof and the passage therethrough of an excess of air heretofore occasioned by the collapsible character of the mouth piece to provide a universal movement in any direction of' the mouth piece,

relatively to the neck or head of the bottle;

to expose a minimum surface of soft rubber to the action of the milk; to insure sanitation by the ready disassemblage of allthe parts; to provide a structure adaptable to bottle n'ecks of various sizes; and to attain these ends in a simple, inexpensive, andessentially operable structure.

To the above ends essentially my invention consists in such parts and combinations of .parts as fall within the scope of the appendi and a dome shaped topwall b ed claim.

"In the accompanying drawings which form a part of this specification, Fig. 1 is a side elevation of the novel nipple applied to the neck of a bottle. Fig; 2, a vertical central section of the .same, Fig. 3, a section on line 3-3 of Fig. 2, and Fig. 4, a'section similar to -that*shown in Fig. 2, wherein the mouth pieceof the nipple is shown in an inclined position.

' Like reference characters indicate likeparts throughout the views.

My invention is shown as applied to the rim a of the neck A. of an ordinary glass nursing bottle.

In detail my device comprises an elastic cap or hood B having a rounded or swelled side wall I), a retracted-bottom portion b,

a central opening b Resting upon the top of the described cap is a solid nipple or mouth piece G of hard rubber or similar non-elastic-and non colof the threads so tightly provided with lapsibles material having a rounded free end ortion' c, a retracted intermediate portion 0, and a bottom portion 0 0f enlarged diameter having its bottom face concaved or provided with a curved cavity a to accommodate the material of the dome b? of the cap. Within the cavity concentric therewith is a circular projecting internal shoulder a having a flat bottom face resting upon the cap. The mouthpiece has a central longitudinally disposed passage d for the passage of the milk, which is of enlarged diameter at its lower portions forming a cylindrical cavity 03 bounded by a thread d engaging a thread 0 upon the exterior of a plug E seated in the cavity and passing through the hole b in the cap. A flat head 6 upon the lower end of the plug presses against the lower face of the cap dome and is forced by the cooperation thereagainst as to be perfectly air and liquid tight. The plug is provided with a central longitudinal passage e of a diameter corresponding to the passage d and registering therewith.

The elastic character of the soft rubber cap B and its retracted lower portion permits its tight application to bottle rims or necks of various sizes, while the dome shaped upper 'portionof the cap allows am-' ple material for the tilting movement of the mouth piece C without excessive strain upon the elastic material. The threaded plug E which is'of hard rubber may by the manual turning thereof be removed. from the mem' dome portion of the cap.

What I claim is In a nipple, the combination of an elasticcap provided with a central opening, a solid mouth piece comprising a rounded free end portion, a restricted intermediate portion, and abottom portion of enlarged diameter provided concentrically in its bottom face with an annular cavity to permit free movement of the cap and mouth piece when the and a member in the mouth piece traversing latter is tilted, a downwardly projecting the opening and engaging the inner face of shoulder integral with the bottom portion of the cap. 4 the mouth piece within the cavity and rest- In testimony whereof I have affixed my 10 5 ing upon the top of the cap whereby the signature) V mouth piece is partially spaced from the cap, ABRAHAM G. GARDINER. 

